Placental localization by ultrasonic compound scanning.
D002584:Cervix Uteri; D002585:Cesarean Section; D005260:Female; D005333:Fetus; D006801:Humans; D008722:Methods; D010920:Placenta; D010923:Placenta Previa / Q000175:diagnosis; D011247:Pregnancy; D014463:Ultrasonography; D014599:Uterus